Cartridge-extractor for guns.



Patented Sept. 9, I902. & G BUCKHAM TRACTOR FOR GUNS B T 2 h v i M A. T.DAWSON CARTRIDGE EX (APP (No Model.) 7

. WWI-314x060 A Q B 0 476 zrfiaciiazzz STATES PATENT O FICE,

AR-THUR- TREVOR DAWSON AND GEORGE THOMAS .BUCKH'AM, oFlwnsrr MINSTER,LoNDoN, ENGLAND, ASSIGNORS T0 VICKERS sons & MAXIM,

LIMITED, O WESTMINSTER, LoNDoN, ENGLAND. i

oARrmoo -E x R cTo n cfu NS.

SPECIFICATION forming part of Letters Patent No. 708,871, datedSeptember 9,

Application filed February 28, 1 902. serial No. 96,152 No model.)

To rtll whom, it may concern.-

Be it known that we, ARTHUR "lanvon DAWSON, late lieutenant of RoyalNavy, and

GEORGE THOMAS BUCKHAM, engineer, subjects of the Kingv of Great Britain,both re-' siding at 32 Victoria street, W estminster, in

from the gun.

the county of London, England, haveinvented certain new and usefulImprovements in Cartridge-Extractors for-Guns, of which the following isa specification. p v This invention has reference to cartridgeextractorsfor breech-loading guns of the kind in which the block is mounted in aswinging carrier.

One of the objects of the invention is-to so construct and arrange thesaid extractor that it will exert firsta powerful rearward pull orprizing action on therim or flange of the cartridge-case, and then justbefore the breech is fully opened will strike therim or flange a suddenblow to eject the cartridge-case from the breech-chamber.

\Ve will describe our. invention with reference to the accompanyingdrawings, in which Figure 1 is a horizontal section of a portion ofthe-breech end of a gun provided with our improved extractor. Fig. 2 isan elevation, and Fig. 3 a plan,of the said extractor removed A is thewall gun;

of the breech-chamber of the B is the swinging carrier, on which thebreech-block is mounted in any usual or apabout which said'carrierswings.

C isthe'cartridge-case. I D is the extractorfwhich is mounted'to oscillate on a vertical pin or pivota, carried by the gun. Said extractorcomprises a lever propriate manner, and B is the hinge-pin,

- with three arms, two of which'-viz.-, d d"-' form a u shaped piece tolie concentric with the cartridge-case, while the other armviz.,-

d'--ext end s from the base or bottom of the U shaped piece and projectsthrough an.opening a'in the wall of the breech-chamber. This arm d isbent to forma tail (1", whose end lies contiguous-to the hinge of theswinging carrier, whichis formed with a cam-surface 1) for acting uponsaid t-ail when-the carrier is lieing swung open. The ends'of theaforesaid U shaped arms (I (Z have lips (P, which are suitably shaped tolie in front of and engage with diametrically opposite sides of the rimor flange of the cartridge-case, Fig. 1; These lips we term for sake ofdistinction ejecting-'- lips. At the base or bottom of the U-shaped armsof the extractor is another lip d which we term for sake of distinctionan extracting or prizing' lip. This -prizing-lip lies in front of andengages with the rim-or flange of the cartridge-case in a positionsubstantially at right angles to an imaginary line extending through thetwo ejecting-lips (1 Fig. 1. These ejecting-lips are so formed that asmall space exists between them and'the flange or base of thecartridge-case when the extractor is fully home or in the positionrepresented in Fig. 1.' As the carrier is swung open the cam-surface 1)thereof acts upon the tail (1, whereby the extractor is caused to movein an outward direction. This movement, which is at first comparativelyslow, causes the prizing or extracting lip d to exert a powerfulrearward pull or prizing action uponthe cartridge-case to liberate itfrom the breechchamber. Then as a depression or shoulder b of the saidcam-surface b engages with the tail d said extractor receives a suddenaccelerated movement, which causes the ejecting-lips d to strike asharprblow nponthe rim or flange of the cartridge-case, whereby may befurnished with only one arm (Z in-' stead of two'sueh arms, asillustrated.

What we claim, and desire to secure by Letters Patent ot' the UnitedStates, is 1 1. The combination with the swinging carrier of abreech-loading gun, of an extractor consisting of a pivoted lever havinglips adapted to engage with the flange of the cartridgeca'se, first at apoint in proximity to the pivot of said lever and then at a point remotefrom said pivot, and of means for actuating said lever during theswinging of the carrier, sub- ,stantially as described.

- 2'. -Thecombination with the swinging carpromptly ejectingejecting-lips 'at its inner ends an extract ing-or prizing lip at thebase of the U and also having a. tail projecting throughan opening inthe breech-chamber and lying in the path of scam-surface onthecnrrienhingesubstantially as and for the purpose described. V

3. The combination with theswinging car- I rierof a. breech-loading gun,of an extractor consisting of a. U-shaped pivoted lever haying at itsinner ends ejecting-lips which lies;

short distance in front of the cartridge-flange when the breech isclosed, an extracting or prizing lip at the base of the U to lie inclose contnct with the front of the cartridge-flange at the side nearestto the pivot of the extrn 'tor, and a bent tail projecting through anopening in-the breech-chamber andlying close to scam-surface on thecarrier-hinge, said csm-surfacebeing formed with a shoulder forimpnrtingto the extractor a sudden accelerated movement duringthecompletion of. the opening movement of the carrier-sub- .35 stantinllyas and for the purpose. specified.

In testimony whereof we have hereuntoset our hands, iupresence ofvtwofsn'bscribing witnesses, this19th day of February,-1902. I

ARTHUR TREVOR DAWSON. GEORGE THOMAS-BUOKHAM. Witnesses:

STUA'BT Bonvnnm, HENRY KING.

